Md5工具类

Md5帮助类(Md5Helper.cs)

using System;
using System.Security.Cryptography;
using System.Text;

namespace Sam.OA.Common
{
    /// <summary>
    /// Md5帮助类
    /// </summary>
    public class Md5Helper
    {
        /// <summary>
        /// 对字符串进行Md5运算，不可逆
        /// </summary>
        /// <param name="str">加密字符串</param>
        /// <returns></returns>
        public static string GetMd5String(string str)
        {
            try
            {
                MD5 md5 = MD5.Create();
                byte[] buffer = Encoding.UTF8.GetBytes(str);
                byte[] md5Buffer = md5.ComputeHash(buffer);
                StringBuilder sb = new StringBuilder();
                foreach (byte b in md5Buffer)
                {
                    sb.Append(b.ToString("x2"));
                }
                md5.Clear();
                return sb.ToString();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    }
}